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SELECT 
  (SELECT COUNT(v.id) FROM votes v where v.VoteTypeId = '2') as votesUp, 
  (SELECT COUNT(v.id) FROM votes v where v.VoteTypeId = '3') as votesDown, 
  COUNT(distinct p.id) as posts,
  CAST(
    CAST(COUNT(CASE when v.VoteTypeId = '2' then v.id end) as DECIMAL(20,5))
    / 
    CAST(COUNT(distinct p.id) as DECIMAL(20,5))
  as DECIMAL(20,5)) as voteweightUp,
  CAST(
    CAST(COUNT(CASE when v.VoteTypeId = '3' then v.id end) as DECIMAL(20,5))
    / 
    CAST(COUNT(distinct p.id) as DECIMAL(20,5))
  as DECIMAL(20,5)) as voteweightDown
FROM posts p
left join votes v
  on p.id = v.postid
left join comments c
  on p.id = c.postid
and p.creationdate > '2014-01-01'

view current version

edited dec 12 14

created dec 12 14 Reaces